1 . 在平面直角坐标系中,曲线
坐标轴的交点都在圆C上,
(1)求圆C的方程;
(2)如果圆C与直线
交于A,B两点,且
,求
的值.
![](https://img.xkw.com/dksih/QBM/2011/6/16/1570241138696192/1570241143767040/STEM/f4e5a37baf094cbdb6b494123957b6f6.png)
(1)求圆C的方程;
(2)如果圆C与直线
![](https://img.xkw.com/dksih/QBM/2011/6/16/1570241138696192/1570241143767040/STEM/32aeb8cfa20c4c9bb4659eebdf3f5ba3.png)
![](https://img.xkw.com/dksih/QBM/2011/6/16/1570241138696192/1570241143767040/STEM/b89e2ca6cdf04e73b0212992e49707be.png)
![](https://img.xkw.com/dksih/QBM/2011/6/16/1570241138696192/1570241143767040/STEM/01e92a2909d54312a9d555400e76a8e9.png)
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12-13高三上·内蒙古巴彦淖尔·阶段练习
2 . 如图,已知AD为⊙O的直径,直线BA与⊙O相切于点A,直线OB与弦AC垂直并相交于点G.求证:BA•DC=GC•AD.
![](https://img.xkw.com/dksih/QBM/2012/1/3/1570671965970432/1570671971287040/STEM/f315c86ae1bc4d52ba001c40d5ff3ce9.png?resizew=144)
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2014·内蒙古呼伦贝尔·一模
3 . 如图,在
中,
是的∠A的平分线,圆
经过点
与
切于点
,与
相交于
,连结
,
.
(1)求证:
; (2)求证:
.
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/ed24334a66354a63a60463dac39a1081.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/b4a7b3b6861c46869f79f118cf7059ee.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/b8b16a33cd0c474390e2e052d96a6d8e.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/40f4b8bedd8747728b8c4e32b5771f55.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/8037d20c16c54512a73bd42ed425f272.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2c56056d8eb14da691ce36b19d7f9e22.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/d3ca15ba591e4f33b1bd26cc520f4023.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/fcbe3a7b28dc4ebca930b25972a40d4b.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2c2ca8e2cc0049adbcefbf10b44585b0.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/6c725f6257264cac90a06ba0182fa89c.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/8613c0abdbac467683ad9b4b0ac14047.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2ab60eb18ec54af6835810a283032015.png)
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/89d11ae09620402c8a4058b61e842c27.png)
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4 . 选修4-1:几何证明选讲
如图,四边形
内接于
,过点
作
的切线
,交
的延长线于
,
.
![](https://img.xkw.com/dksih/QBM/2016/9/9/1573010931654656/1573010937626624/STEM/3b8bf95bdc44496bb113aba6935c01a3.png)
(1)若
是
的直径,求
的大小 ;
(2)若
,求证:
.
如图,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fee0f0b284f0e5df672e09bf97a366.png)
![](https://img.xkw.com/dksih/QBM/2016/9/9/1573010931654656/1573010937626624/STEM/3b8bf95bdc44496bb113aba6935c01a3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001fb1746a5c0d71c5d645e024fa8b3e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fee0f0b284f0e5df672e09bf97a366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de2c2a48dbe6e61f4c3d63fa5ac8d8b.png)
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2016-12-04更新
|
106次组卷
|
2卷引用:2016届内蒙古赤峰市高三4月统一能力测试数学(理)试卷